For translated titles of cited works – CMoS 14.99
Scores should generally be treated as books. Arrangers of works are treated like editors or translators.
Thomas, Augusta Read. Incantation: For Solo Viola. New York: G. Schirmer, 2006.
1. Augusta Read Thomas, Incantation: For Solo Viola (New York: G. Schirmer, 2006), 2.
These should be treated like chapters in a book, or volumes in a collection of works.
Schubert, Franz. “Gefrorne Tränen.” No. 3 in Winterreise, op. 89 (high voice). Urtext of the New Schubert Edition. Edited by Walther Durr. Kassel: Bärenreiter, 2009.
1. Franz Schubert, “Gefrorne Träanen,” no. 3 in Winterreise, op. 89 (high voice), urtext of the New Schubert Edition, Walther Durr, ed. (Kassel: Bärenreiter, 2009), 8.
This is not listed in CMoS, but is similar to an electronic book.
Beethoven, Ludwig van. String Quartet in B flat major op. 18 no. 6. Universal Edition. Philiharmonia series. New York: E. F. Kalmus, 1937. https://imslp.org/wiki/Special:ReverseLookup/90199.
1. Ludwig van Beethoven, String Quartet in B flat major op. 18 no. 6, Universal Edition, Philharmonia series (New York: E.F. Kalmus, 1937), 172. https://imslp.org/wiki/Special:ReverseLookup/90199.
Unpublished scores are cited the similar to unpublished books. Copy information exactly as it is listed.
Some scores can be found using the internet, if there is a webpage that links directly to the item, include the URL. Otherwise, do not include an URL.
Example: https://ww.themorgan.org/music/manuscript/114166
Bach, Johann Sebastion. "Cantatas. Selections. Seven Cantatas by Bach, once owned by Mendelssohn." Copyist's manuscript. [1700-1750]. Department of Music Manuscripts and Books, Pierpont Morgan Library. https://ww.themorgan.org/music/manuscript/114166.
1. Johann Sebastian Bach, "Cantatas. Selections. Seven cantatas by Bach, once owned by Mendelssohn," copyist's manuscript, [1700-1750], Department of Music Manuscripts and Books, Pierpont Morgan Library. https://ww.themorgan.org/music/manuscript/114166.